Usually I see her twice a week, but (obviously) during this time she won't be available at all. First she said that it would be great to practise with not having therapy at all, so I should just go without therapy for a month. I protested this, however, because it would be a very big transition, and we are not even close to terminating at all. (We are in the middle of treatment!)
Then she found me a colleague to see. At first I felt relieved when she told me this. Now, I'm not so sure anymore. The feelings that will be triggered by my therapist being away are carried almost exclusively by child parts. Two of them in particular do not trust adults AT ALL, so it will be very difficult to convince them that the therapist is safe. (It is these parts who especially need a safe place to express their feelings!)
Also, the therapist has no experience with DID. He does treat children, adolescents, and adults, also for trauma. My therapist said that he is very patient and kind.
I'm very afraid that this person will misunderstand us if we don't provide background information, including information about parts. However, the idea of trusting him or even him knowing those things about us feels extremely uncomfortable and unsafe. My therapist offered that he could come to one of our sessions to introduce himself, but that also feels incredibly intimidating! There would be two of "them". I feel guarded and afraid just thinking about it.

My question is, does anyone have experience with something like this? What would you advise me to do? Any thoughts? Ideas?